全文获取类型
收费全文 | 188篇 |
免费 | 2篇 |
国内免费 | 7篇 |
专业分类
安全科学 | 58篇 |
环保管理 | 32篇 |
综合类 | 76篇 |
基础理论 | 5篇 |
污染及防治 | 5篇 |
评价与监测 | 16篇 |
灾害及防治 | 5篇 |
出版年
2023年 | 1篇 |
2020年 | 1篇 |
2018年 | 3篇 |
2016年 | 5篇 |
2015年 | 4篇 |
2014年 | 30篇 |
2013年 | 6篇 |
2012年 | 24篇 |
2011年 | 21篇 |
2010年 | 7篇 |
2009年 | 10篇 |
2008年 | 18篇 |
2007年 | 11篇 |
2006年 | 9篇 |
2005年 | 12篇 |
2004年 | 5篇 |
2003年 | 6篇 |
2002年 | 7篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
排序方式: 共有197条查询结果,搜索用时 750 毫秒
81.
82.
With the increasing demand for fossil based energy and implementation of progressively strict environmental pollution control
standards, treatment of a large amount of co-produced waters (CPWs) from fossil based energy production has become increasingly
important. Removal of bicarbonate with H2SO4 has been recently studied as a simple and cost-e ective method to decrease the alkalinity
of CPWs. The present work investigates the kinetics of the reaction between H2SO4 and NaHCO3, which could provide the base for
scaling-up the CPW treatment technology. Based on the measured quantity change of the CO2 gas generated from the reaction between
H2SO4 and NaHCO3 with time under specified initial reaction conditions, the reaction orders with respect to H2SO4 and NaHCO3 were
determined. Experiments were also conducted within the temperature of 15–30°C to find various global rate coe cients of the reaction
to calculate the activation energy and the pre-exponential factor of the empirical Arrhenius form of the bicarbonate removal reaction,
which are 197.7 kJ/mol and 3.13 1034 (mol??3:7 L3:7 sec??1), respectively. 相似文献
83.
84.
85.
86.
87.
88.
89.
90.